Take-up motion for looms



June 21, 1927.

. 1,633,142 E. E. TALBOT TAKE-UP MOTION FOR' Looms Filed May 27, 1924 3SheeiLs--Sheet' l N 'Q t 5 June 21', 1927. v 1,633,142

l E. E. TALBOT TAKE-UP MOTION FOR LOOMS Filed May 27, 1924 ssheets-sheet 2 June 21 1927.

E. E. TALBOT TAKE-UP MOTION FOR Looms4 Filed Mayi 27, 1924, 3Sheets-Sheet 3 Inveia M 5M, by zz'dmrqy,

Patented June 21, 1927.

entren STATES Parri-11\1r omen.

`TAKE-Ur/ MOTION ron LooMs.

Application filed May 27,

My iin-'entionrelates totake-up motions 'for looms, for winding clothover the breast bem and on to the clothroll as 'fast as the is insertedand the cloth is woven.

ne takeup-motion, the speed lat which the cloth is drawn over thebreast-beam, governs thenumber ot picks per inch that are lplaced in thecloth, the greater the speed, the fewer the picks per inch, andA viceVersa.k

"' is common practi it ce. among loommakers to employ, in theirtakeup-inotions, a train ot several gears, some ot which are changegears, one a Lchange pinion gear, ai l a compound change gear. To.enable a loom to weave cloths varying in number ott picks per-inch, sayfrom 26 picks to 1&9 picks, there mnst be something like 8O dit# t'crentcombinations of the sev-eral gears making up the train; that is, eachcombination must beinade up of one change pinion gear, either one ofl'Gteet'h, orV one of 20 teeth; one of change gears, varying i number orgear teeth from A to and 1,5 tl. permanent` gears ,having fixed numotgear teeth. Accompanying each particular make `of looms is a tables'how'ng the various numbeil ot picks perinch that may be woven, 3o andthe particular'combination ofV change gear, and change gear pinion,required to produce the desired number ot picks per inch ci? clothlwoven; so that, knowing the number ot picks demanded, the Vcombinationot` gearsl is at once disclosed. y

t is to be noted, next, that'when a loom` is `toppedon account .of thetillingrunning -or breaking, the momentum ofthe loom g i orally carriesthe loom at least twopicksV re it stops, consequently, it thcre'is.Vnothing to prevent it, the takeup-inotfon will operate tor those twoVpicks, although there is no iiiling being placed' in thecloth;v and whenthe loom is started and the filling equireth a thin place lvwill appearin' cloth. i

runs out 'isibroken, elec e mechanism operates-a pawl which a'ilon'stune'` i Lne train to be .tnrned back, teeh, i. e. the distance itlz'wascarter -rd during the two picks by the onientinndoi thestopping loom, sothat the L yNumerous other advantages 1924. Serial No. 716,117.

cloth is in the position it` was, when the illingv ran out or wasbroken.

Nowit lrequentlyhappens thatA the sand roll, under the `direct tensionof the'warp i threads and-the cloth, ct'lnnct'be-turned back at all,because'ot the number and weight ot' the 'gears V.cistituting theytrain. InA such event, the above-mentioned thin place?7 vin the clothappears,because there is not enough tension in the cloth and warp tobring about the necessary letfbac t ot' thesand r0.1 and its heavyoperating gears.

`Now it is one ot the objectsof my invenfV tion to insure this letbackot the sand roll, andy hence, t-hezreturnfof the clothto` ther positionit was in when' the filling ranl out or` broke, withoutlimitingthearallge in the usual number of picks `per'inch of cloth, determinedbythe takeup-moticn, say, between-44 and 176 picks perinch. I attainthis yobject by providing (l) avtrain of three gears as substitutes ot'the several former-lyl used, thereby reducing their number, weight andArolling friction; and? by providing twoor lmore separate sourcesofkf-poweneach Voperating at different speeds,- so that,v any particulartrain ot three gears*giving'a par-1 ticular number ofpicks per inchotlclotln.` may be driven at any one ot'- two or more diiierent speeds,and hence `correspondingly vary the numberof picks perin'ch; all withthe result, that the reduction of the pick capacity of thetakeup-motion,-fduey to fewer gears in vthe train than formerly, per-.1,

, mittingthe desirable let-back and absence of thinness in cloth,-isrestored tonorf mal capacity, by giving any one ot the several differentspeeds, to each combination ot gears inv the train.V

By reason of my invention, instead of requiring, for example, 8Ovdifferent combina.-` tions ot several gea-rs to gbring about any 'numberof picks between saylll and 176 picks per inch, only aboutQB ditferentcoinbinations ot three gears, arerequisite; and instead ofusing'50-change gears and one ot two change gearpinions, l useone ot 311change g-earpi-nions and three ch-ange ratchets. I thus dispense with,say, 30 gears, their cost, and their presence vin the combination trainvot gears. n

' will appear hereinafter.

lim

In the drawings illustrating the principle of my invention and the bestmode now known to me of embodying the same in operative structure,

Fig. 1 is an end view ot m invention, operated by either a cam or adriving gear, on the cam shaft.

Fig. 2 is a like view showing the connection between the lay-sword ot tle loom, and one arm operating the pawl ot the takenpmotion; thelay-sword being a third source of power.

Fig. 3 is a plan, and

Fig. 4 is a front view of the said motion.

Fig. 5 shows in end elevation said motion operated by the cam on thecam-shaft.

Fig. 6 shows in enlarged detail, in elevation, a well-known form ofdetent and letback pawl holding a ratchet, operated by a driving latch.

A rigid take-up lever 1, Fig. 1, is pivoted on a stud 2 fastened to thesand roll stand 3 0f the loom. It has two arms 1a and 1b. Its arm, orelephant trunk 1a extends torwardly and downwardly towards the base ofthe loom, the bottom end portion 4 ot the arm 1a being pivotallyconnected to a link 5 whose opposite end portion is connected to aneccentric 6 on a driven gear 7, by a strap 8, the driven gear, meshingwith a driving gear 9 iiXed to a cam-shaft 10, and being in diameterone-halt that of the driven gear. That the eccentric may be adjuffted inrelation to the center of the `driven gear, the latter has a slot orgroove 11 diamet-rically cut in its face, and in this slot is movablymounted a key formed radially upon the back or' the eccentric. Alockbolt 12 passes through a radial adjusting slot 13 in the eccentric,and through a hole in the driving gear. By this arrangement of parts,the eccentric may be adjusted to give the desired throw. Also upon thecam-shaft 10, Figs. 1 and 5, is a cam 14 which operatively engages afilling-cam member 15, pivcted on said stud 2, Figs. 1 and 5; theworking end portion of which member is slotted, as is likewise the freeend portion ot arm 1b ot the take-up lever 1, whereby by means oit' thebinding screw and nut 16, Fig. 5, said filling cam member 15 may becomeiiXedly, as in Fig. 5, or loosely, as in Fig. 1, secured to the arm 1bof the take-up lever 1.

Attached to the takeup-lever 1 is a driving latch or pawl 17, so shapedto engage a ratchet 18, which is removably mounted upon a pinion stud 19in the sand-roll stand 3. Also removably mounted on this stud. is achange gear pinion 19 which meshes with a gear 20 on a sand-roll 21. Thenumber of teeth on each gear ot this train is assumed for the sake otillustration, to be as follows :-110 on the ratchet 18; 16 on the rlllhesand-roll gear is not changeable; there are 34 change gear pinions,having from 10 to 44 teeth; while there are three change ratchets havingrespectively 110, 112 and 114 teeth, or more it desired.

The ratchet 18 is designed to be moved forward one tooth at a time, bythe pawl 17; but as each change ratchet has a diiierent number ot teethand a different diameter, from each other ratchet, the movement ot thelink 5 connecting the elephant trunk or takeup-arm 1, and the eccentric6 on the driven gear 7, operated by the driving gear 9 on the cam shaft10, must be so controlled that it will cause the pawl to engage only onetooth of whatever change ratchet may be in use. This is done byadjusting the eccentric 6 to vgive the required throw to cause the link5 and takeup-arm 1 to'move driving latch 17 enough to engage only onetooth of the ratchet upon each revolution ot the eccentric. p

The detent and let-back pawl 22, Figs. 1 and 6, which l employ, but wasnot invented by me, is well-known in tl .e art, and manuactured and Soldby Kilburn, Lincoln Ma chine Company of Fall River, Mass.

it comprises a. lever pivoted upon a stud 50, on the traine, and achanneled gravity latch 51 tor controlling the ratchet 18; one arm 52being operated by `suitable mechanism', not shown, when iilling threadbrea (s, or runs out; while the other arm 53 serves as a guideway forthe channeled latch 51, which, in normal position, as shown in Fig. 6,protrudes through an opening in the end portion ot the latch 51, the'free end portion ot the latch being adapted to ride over, say, twoteeth or' the ratchet 18, and engage the second tooth and serving as adetent; and when so doing, a lock tooth 57 on arm 53 engages a lock bar58 of the latch, and prevents any movement ot the latch along the arm53.

A pin 56, through ears in the latch, permit a slight rotary movement otthe arm 53 in relation to the latch; while a Vshoulder 61 limits alongitudinal movement ot the gravity latch, by an engagement with theedge 62 ot the opening in the latch 51; the distance between said edgeand said Shoulder being such that when a filling thread breaks or runsout, the arm 52 will be moved to the lett. thereby causing the locktooth 57 to move up and away troni the lock bar 58, without lifting the.tree end ot the latch out of engagement with the tooth of the ratchet18; so that while the driving latch 17 moves the ratchet ahead, thedistance of two teeth, the gravity latch 51, without disen-Y gaging theratchet, follows down the `guidearm 53, until the edge 62 abuts theshoulder 61; and when the latch 17 moves again to push ahead theratchet, the cloth tension causes the ratchet 18 to reverse its rotarymovement, the gravity latch 51 being forced gang upwardalongthjejguide-arin until'th" gravity latch abuts' tliepshouldeif 59andth'usv the letlback pawl l22 returns to'n'ornial posi` tion;r theguide-alan 523 moving vto the left' the pivot ()4 and the pin 5,"untilits f 57 engages the lock bar 58', and the detentjletback,Y pawl22 is'returned toits working position; `that is', to serve 'asa detentfvai'idhold the ratchet 18 while the latch 17 is ino'ving ba`c`k two teeth tomove again' the ratchet 18.

In order that the taleupdnotion inay be' driven at a j speed differenttroni that clerive'd by using either the canrll or the gear' 9, on thecani-shaft the takeup-lever arm 1 'n be'fconn'ecte'd 'to' thelay-swOrdKQB, as slfrownin Fig. 2.

l 'voted' a link24, 'the 'free end of which vis threaded and renfiovablysecured by a nut 2,5y

To the meer @ad portion 4, is i to aV yoke 26 thefree'end of theyokebeing adjustably 'secured a slotted ineinber v7 tired yto thelay-sword 23.

'itis to' be recalled 'that' the lay nieves for#y ward andback once foryeach re'folutin of the main shaft, not shown, that is', once for eachpick; that the cani-shaft revolves once every two picks; that the latterhas one-half' of the speed oi the former; andcvthat as thedriving-gearprf) fon tlie"`ca1nshait is, Yin difit) ani'eter, one-haltthat oitv thedrivenfge'ar 7,

the speedy of rotationvoif" the'latter, is onehalf thatot' thedrivingf'gear, an'd',henoe,fthat of tliefcain-shaitt; lso that vforeachpicket` the leoni, the 19.57.23y operates forward and' back, once;the cani lil on ,the 'Cain-shaft revolves once for: each two picks; andthe driven-gear 7 once, for each four picks.v

TWe' will assuine that the rcombination of the train ot gears'and thesource of power and speed aresuch aswill cause the takenp-y rnotion'toinove` vtliie/clfotli overv the breast beani on .to the. sand-roll 21,at aspeed that will produce the desired nuniberoic picks 'i reduce thenumber 'of picks per inch, onehali.

per inch of cloth woven; and that the filling cani-member 15, `Figl,hasxbeen eisxcon' nected troni the takeup-lever by ay loosening thebinding` nut and bolt 16 .in the re'- once; the link 5,v andtakeupflever 1 nioveV forward 'and back; the driving-,latch- 17 snapsover the nent ratchet vtooth and moves'` theratchet 18 forward; thek,detentand let-A bl ck pawlQQ dropping into its nentV ratchet toothspace to hold vthe 'ratchet'` duringz the next inovenient ot Lthedrivinglatch. These movements areV 'repeated for every two revo# lutionsof the cani-shaft. Resulting from these inovenients' of the ratchet,Aare the in'jvnifents of the change-pinioir-'gear' 19', the sand-'rollgear 20, they sand-roll 21, and the cloth Ahaving' the desired speed toproduce the wished-.for picks per inch of cloth woven.

The mloinen`tuin of the inoving parts ,of the looin is likely to causethe takeup-ino'ti'on to advance thek cloth and warp, say two' picks,with no filling, be'lore the looinand takeup-inoti'on stop. However,the'niolnent the filling` breaks or runs out, suitable inechanism, notillustrated, operates, and causes the j cle-tent and let-'bacltpawl 22to 'engage and allow. the ratchet 18, in the inanner al-` readydescribed,.to be reversed the desired distance required for two picks bythe teuf,

sion ot the cloth and warp-threads acting through the sandroll 21, andthe train of gears includingtheratchet- The cloth has thus been returnedto the position it was in when the lilling broke or Aran out, and isready for the next pick with filling. This let bac of cloth and warp andgearing, is assured, because oi" the reductionin nurnber, weight andfriction of' .the train :et

gears. f A

As the source ofpower and speed,and the combination oi gears of thetrain, are suit# able for a certain nurnbe'r o'f picks per inch ofcloth, it is plain that it the, source ot power is changed, soythat,tliegspc-ed of the train of gears is doubled," the takeup-niotionwill cause the speed of the cloth and warp to be'wove'n,'to be' doubled,andthere Vwill be one'half the numb-eroi' picks perinch that were givenbefore. AFor example, it the link 5,v Fig. 1',"conn"ecting the"elephanttrunk arrn 1,, and the zdriven gear, be removed; and theiilling-cainlever inen'ib'er 1,5 and takeup-lever-arn'i'1b be securedtogetherby the binding nut and bolt 16, Figg, passing through theirrespective slots, and thel loorn be started, then the cain 14 on thecani-shaft being the'source of power and speed, will act upon thecomb-ined illing-cain ineinber 15 and takeup-lever'l', andcause thedriving latch 17 to inove the ratchet-18,gearing, sandro'llQlla and'cloth 'twice as' tast before, and y Still furthensliould'it be desiredto reduce the number ofy pic'ksper inch one-half again, then this'result may be obtained by using as anew source of powerv having twicethe last speed, rthe lay-sword 23,;Fig. y2. To put the takeup-inotionshown in 'F 'l in proper conditionl to accomplish this result,thelilling-*cani rneniber-15 and the takeu'p-lever 1 lnust bedisconnected, and for the link?) inust be substituted the .link 24A,yconnected to the takeup-lever' ar1n1,-and to the lay-'sword 23, asshown in Fig; 2. i l y i u Also, if with' the combination oivfgearsshown, it werewished to, have,V tor-example, three-quarters of thenuinb'er orn picks vper inch produced by the driving Vand driven gearsupon the cam-shaft, then by providing a driven gear having a diameter ofthreequarters of that of the driven gear shown, that is the ratio of thediameter of the driven gear 3 the diameter of the driving gear-2 Tableshowing how a single combination of three gears can, by changing 'itssource of power, obtain as many different numbers of picks per inch asthere are different sources of power and speed.

ses e a d u Q o C, .H o a,

O o E 'Q 'D ,ci

1 rCl @H n am n Source of power i O at? l E w n u: ,-1 Q n D o 4 1 a 1 oses s n e e 4s B .e e e as e a a a .s $21 $11 m il( Main shaft,orlay-sword-one pick i to liO 16 78 44 during each revolution, or foriWard and back movement of laysword. Cam or Cam-shaft% speed of 2 to il()16 78 8S main-shaft-Z picks during each l revolution of cam on earnshaft. Eccentric on driven sean-M speed 4 to 110 i6 i8 176 of gear oncam-shaft-iour picks l during each revolution of driven gear. Eccentricon driven gear-ratio e 3 to 110 i6 7S 132 speed of driving gear on cam lshaft-3 picks during each revolution of driven gear.

Should the combination of gears be, for example, 114, 15, 78, and thevarious sources of power and speed be applied as above, then there wouldresult respectively 48, 96, 192 and 144 picks per inch.

In short, by having available three or more different sources of powerand speeds, I can with the same train of three gears weave three or moreseparate pieces of cloth each having a different number of picks perinch of cloth :-that is, without, as heretofore,

having to change the combination of gears to produce each differentnumber of picks.

Obviously, by using a train of three gears, two of which are changeable,a person cannot get the necessary number of different picks per inchthat can and must be obtained, as formerly, with a train of tive gears,two of which are changeable; but it is true, that by using three or moredifferent sources of power and speed, and a train of three gears, two ofwhich are changeable, I do get the necessary number of different picks,and at the same time, without the great number of changeable gearsheretofore required.

In line, by means of my invention, there is much greater assurance thatthere will be no thin places?y in the woven cloth; the numh ber ofchangeable gears will be greatly reduced; the need of changing thecombinationl of gears is greatly reduced; the gearing is easilyaccessible for changing; the necessity of purchasing and having what isnow a great number of change gears for each loom, is obviated.

l/Vhile I have derived, as here shown, my power and different speedsfrom the crankshaft, the cam-shaft, cams and gearing, I do not limitmyself to them particularly, for my idea is to combine the driving-latchof a takeup-motion with any source of power whereby the latch may begiven Vdifferent required speeds of action upon its ratchet.

This takeup-motion may be used in weaving borders, the cloth and warp,and hence the takeup-motion, being stationary vduring the periodrequired to put in the number of picks used to make the border.takeup-motion may be stopped for a certain number of picks, a dobby, notshown, is connected by a wire 28, to the top portion 29 of the pawl 17,and, by the operation of the dobby, the pawl is caused to disengage andlater engage, the ratchet seasonably to stop and start thetakeup-m'otion, before and after the formation of the border.

A safety latch 30 is ready to engage and limit a reverse movement of*the ratchet 18, should a filling thread break or run out, and thelet-back pawl 22, and the pawl 17, for any reason, be out of engagementwith the ratchet 18. The latch is pivoted at 31. Its rear arm 32 isheavier than its toothed arm 30a, its downward movement being determinedand limited by a vertical adjusting screw 33 by means of which the latchmore or less deeply engages the ratchet. rihe rachet, moving normallyahead, slides over the teeth of the latch, which is out of engagementwith the screw 33, but should the ratchet reverse its movement, theweighted arm of the latch would fall and stop upon the top of theadjusting screw, one of the teeth of the latch being ready to engage atooth of the ratchet, and stop its reverse movement. But it will beobvious that the amount of the reverse movement of the ratchet dependsupon the position of the safety-latch and the adjusting screw; and thatby lowering or by raising the screw,

the latch is given greater or less movement,

and correspondingly limits the reverse movement of the ratchet. Inpractice itis adjusted to permit the same rear movement of the ratchetas is allowed by the left-back pawl Q2 when the filling thread breaks,say

two teeth. The result is that the safety-latch never interferes with theaction of the letback pawl, but is readyto duplicate the action of thelet-back pawl, whenever the latter fails in its action. It may be saidthat,

in actual use, the let-back pawl fails to act, say once a day. VThesafety-latch therefore obviates results due to the failure of the actionof the let-back pawl. This apparatus That the constitutes one of thefeatures of my invention.

Desiring to protect my invention in the broadest manner legallypossible, what I claim is 1. A talieup-motion having a sand-roll; atrain of gears comprising a sand-roll gear, a change-pinion gear, and achange-ratchet gear; a ratchet pawl; a source of power, acting at onespeed; a source of power'aeting at a different speed; means forconnecting and disconnecting said ratchet pawl from one .source ofpower; and means for connecting and disconnecting` said ratchet pawlwith said other source of power, for operating said sand-roll at anyoneof said differ-` ent resulting speeds; and detent and letbaclrmechanism; the chain of gears and sand-roll reversing their rotation,.during the release of the detent and let-back mechanism Vfrom thekchange-ratchet'gear, by the tension of the warp threads of cloth beingwoven and engaging the sand-roll` 2. A takenp-motion for a loom, havinga sand-roll; a train of gears comprising a sand-roll gear; achange-pinion gear and a change-ratchet; a ratchet pawl; a drivingshaft;a cam anda driving gear thereon, a driven gear meshing with the drivinggear, each having a diiferent diameter; a takenplever having two arms; afilling cam member, operated by said cam; a link operatively connectedto one end of one of said arms,

and eccentrically connected to said driven gear; means for rigidlyconnecting, and disconnecting, said filling cam member and the other ofsaid arms; means for operatively connecting said ratchet pawl with thefirst of' said arms, whereby they pawl may `drive the ratchetof thechain of gears at dierent speeds. v

3. A takeup-motion for a loom, having a sand-roll; a train of gearscomprising a sand-'roll gear; a changepinion gear and a change-ratchet;a ratchet pawl; a lay; a cam shaft; a cam thereon; a driving gear onsaid cam shaft; a driven .gear meshing with said driving gear, eachhaving a different diameter; a takeup-lever having two arms; a fillingcam member, operated by said cam; a link operatively connected to oneend of one of said arms, and that may be eccentrically connected to anddisconnected from said driven gear ,means for connecting said link to,and disconnecting said link y from, said lay; means for rigidlyconnecting and disconnecting said filling Cam member and the other ofsaid arms;l means for operatively connecting;v said ratchet pawl withthe first of said arms, whereby the pawl may drive the ratchet at anyone of three diEerent speeds. i

' In testimony whereof I hereunto affix my signature.

EVARISTE E. TALBOT.

